Explain how strategies for problems sach as 58+6 or 72- 5...

Explain how strategies for problems sach as $58+6$ or $72-$ 5 are similar to the make-ten strategies for basic facts. How can you help children extend their basic fact strategies to these larger numbers?

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Key Concepts

Place Value

A solid understanding of place value is key when teaching children how to extend basic arithmetic strategies to larger numbers. Recognizing the value of each digit in a number (such as tens, hundreds, etc.) enables learners to decompose numbers effectively and apply mental math strategies strategically.

Extension of Basic Fact Strategies

Extending basic fact strategies to larger numbers means applying the same mental math techniques used with smaller numbers to more complex problems. This approach leverages the familiarity with basic facts, such as making ten, to simplify and solve arithmetic problems involving higher place values.

Make-Ten Strategy

The make-ten strategy is a mental math technique that simplifies addition and subtraction by breaking numbers into parts that combine to form ten. This method builds on the idea that creating a round number, especially ten, can make calculations easier and more intuitive.

Number Decomposition

Number decomposition involves splitting a number into more manageable parts based on its place value. This process not only helps in understanding the structure of numbers but also supports the application of simpler arithmetic facts to larger or more complex sums and differences.

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